Description:

1.Multi-purpose - Diamond grinding burrs made of high speed steel coated with diamond particles, extremely sturdy and wear resistance. Great for polishing stone, glass, ceramics, tile, brick,fiberglass, rock etc.. 2.Ccompatibility - With a approx.1/8" shank works with any rotary tools and drills.. 3. Great Tools - Highly recommended for jewelers, lapidary, DIY engraving hobbies, stone carving, craft modeling, home repair. precision detail work, polishing, grinding, cutting, engraving, carving, touch-up and finishing, dogs nails etc.. 4.Assortment of shapes - 6 different shapes and sizes meet various applications. 20pcs packaged in a plastic box, falling resistant and moistureproof easy to store..